Sharing files between container and host

Question

I'm running a docker container with a volume /var/my_folder. The data there is persistent: When I close the container it is still there. But also want to have the data available on my host, because I want to work on code with an IDE, which is not installed in my container.

So how can I have a folder /var/my_folder on my host machine which is also available in my container?

I'm working on Linux Mint.

I appreciate your help.

Thanks. :)

Answer 1

链接：Manage data in containers

您想要的基本运行命令是......

docker run -dt --name containerName -v /path/on/host:/path/in/container

问题是安装卷会（为了您的目的）覆盖容器中的卷

解决此问题的最佳方法是在安装后创建要共享的文件（容器内）。

在docker run上执行ENTRYPOINT命令。因此，如果您的文件是作为入口点脚本的一部分生成的，而不是作为构建的一部分生成的那么，一旦安装，它们就可以从主机上获得。

因此，解决方案是运行在ENTRYPOINT脚本中创建文件的命令。

如果失败，在构建期间将文件复制到另一个目录，然后在ENTRYPOINT脚本中将它们复制回来。